ghsa-3f3q-cv7c-w6c7
Vulnerability from github
Published
2024-03-04 18:30
Modified
2025-01-16 18:30
Severity ?
7.0 (High) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Details

In the Linux kernel, the following vulnerability has been resolved:

mm/damon/dbgfs: protect targets destructions with kdamond_lock

DAMON debugfs interface iterates current monitoring targets in 'dbgfs_target_ids_read()' while holding the corresponding 'kdamond_lock'. However, it also destructs the monitoring targets in 'dbgfs_before_terminate()' without holding the lock. This can result in a use_after_free bug. This commit avoids the race by protecting the destruction with the corresponding 'kdamond_lock'.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47088"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-03-04T18:15:07Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/dbgfs: protect targets destructions with kdamond_lock\n\nDAMON debugfs interface iterates current monitoring targets in\n\u0027dbgfs_target_ids_read()\u0027 while holding the corresponding\n\u0027kdamond_lock\u0027.  However, it also destructs the monitoring targets in\n\u0027dbgfs_before_terminate()\u0027 without holding the lock.  This can result in\na use_after_free bug.  This commit avoids the race by protecting the\ndestruction with the corresponding \u0027kdamond_lock\u0027.",
  "id": "GHSA-3f3q-cv7c-w6c7",
  "modified": "2025-01-16T18:30:57Z",
  "published": "2024-03-04T18:30:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47088"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/330c6117a82c16a9a365a51cec5c9ab30b13245c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/34796417964b8d0aef45a99cf6c2d20cebe33733"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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